Inheritance of Nitrogen Use Efficiency in Inbred Progenies of Tropical Maize Based on Multivariate Diallel Analysis

Table 2

Empirical BLUP estimation of the general combining abilities (GCA) in the univariate and multivariate approach, estimates of selective accuracy (), heritability in the broad sense (), and mean square error of the univariate and multivariate analyses of the grain yield trait (t ha⁻¹) of the hybrids evaluated at different levels of N in two environments.

GCA
Parents	Envir 1, high N		Envir 1, low N		Envir 2, high N		Envir 2, low N
	Univariate	Multivariate	Univariate	Multivariate	Univariate	Multivariate	Univariate	Multivariate
G1	−0.3364	−0.3263	−0.1431	−0.3132	−0.7068	−0.6931	−0.3082	−0.2908
G2	−0.1758	−0.1800	0.0295	0.0169	0.1235	0.1233	−0.1232	−0.1220
G3	0.0548	0.0546	0.1671	0.1325	0.1703	0.1655	0.4317	0.4225
G4	0.0905	0.0887	0.0335	0.0124	−0.3173	−0.3206	0.0795	0.0812
G5	−0.0117	−0.0159	−0.1523	−0.0046	−0.2911	−0.2799	0.1608	0.1633
G6	−0.5829	−0.5800	−0.1520	−0.1290	−0.1693	−0.1665	−0.5136	−0.5117
G7	−0.2789	−0.2708	−0.5553	−0.5621	−0.0238	−0.0201	−0.1182	−0.1146
G8	−0.0497	−0.0438	−0.2478	−0.2481	−0.1792	−0.1761	−0.4435	−0.4541
G9	0.8006	0.8037	0.2987	0.3049	11.702	11.668	0.9185	0.9304
G10	−0.3165	−0.3145	−0.1357	−0.1306	−0.3443	−0.3441	−0.2740	−0.2654
G11	0.8061	0.7843	0.8574	0.8247	0.5677	0.5449	0.1902	0.1614
	91.92		87.34		91.62		82.22
(LL–UL)^¥	84.45 (76.4–89.5)		76.29 (63.93–83.97)		83.93 (75.56–89.14)		67.66 (50.72–78.10)
Mean square error
	Univariate				Multivariate
	0.2616				0.0663

Lower limit (LL) and upper limit (UL) of the confidence interval of heritability, obtained at a level of 5% significance.